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- T. G. MORSE. Key for Attaching Gearingmto'Shafting.

No. 224,102; Patented Feb. 3, I880.

WITNEEEEE NVENTEI'R PETERS, FNOTO-LITHOGRAPHER, WASHINGTON D O UNITED STATES PATENT OFFICE.

THOMAS Gr. MORSE, OF ERIE, PENNSYLVANIA, ASSIGNOR OF ONE-HALF OF HIS RIGHT TO THE JARECKI MANUFACTURING COMPANY, (LIMITED,)

OF SAME PLACE.

KEY FOR ATTACHING GEARING TO SHAFTING.

SPECIFICATION forming part of Letters Patent No. 224,103, dated February 3, 1880.

Application filed October 31, 1879.

To all whom it may concern Be it known that I, THOMAS G. MORSE, of Erie, in the county of Erie and State of Pennsylvania, have invented a new and useful Key i for Attaching Gearing to Shafting; and I do hereby declare the following to be a full, clear, and exact description thereof.

My invention consists in providing a new and improved key for securing gearingwheels, &c., to shafting.

The object of my invention is to provide a key for securing gearing-wheels, 850., to shatting, which shall, when tightened, press evenly against the sides of the grooves in which it I 5 sets throughout its entire length, and shall exert its pressure in the direction of movement of the shaft.

When gearing, &c., areattached or secured by a wedge-key, or by a key and setscrew, the

pressure or resistanceis exerted in a direction tangential or radial to the direction of motion, and hence does notoffer its greatest resistance in the direction of the greatest force to be overcome, which forceis, of course, exerted 2 5 in the direction of revolution or centrifugally. i To overcome this defect is the prime object of my invention. i

Asecondaryobjeot is to provide a key which shall be easily and quickly adjusted.

My device is shown in the accompanying drawing, which is an elevation view of a drive or balance wheel with the hub and shaftin section, (vertical.)

The hub and shaft are grooved with par- 3 5 allel-sided groove, the same as when a square bar-key and setscrew are used. I

My key consists of three pieces, 0 and D D, of which the pieces DD lie on the sides of the groove and have their inner faces beveled,

0 the thin edges of these pieces being placed up, thus forming between them a wedge-shaped space. In this space is placed the third piece,

C, which is wedge'shaped, and is narrower than the side strips D D, and can therefore, be pressed down between them by the action of the set-screw E. I

When the set-screw E is tightened down the wedg'eC forces the side strips, D D, against the side walls of the groove. Thus it will be seen that the key exerts its power against the parallel side walls of the groove in a parallel manner that is, evenly throughout the whole length of the groove-for the pieces C and D D are of even length with the groove.

It will also be seen that the pressure of the key is laterally and not vertically wholly, as is the case when a wedge or bar key and setscrew is depended on.

The force or power exerted by the wheel as it revolves is centrifugal or laterally against the sides of the key, and the pressure of the key should .be in the same direction, and in my device this is the case.

The use of a wedge as a mechanical power within the key itself relieves the screw of a large portion of the power to be exerted, and

hence the screw is much more easily adjusted. In place of the screw E wedges over the top of the piece C may be used.

What I claim is as follows: A key for securing wheels, pulleys, and other like objects to shat'tin g, consisting of the parts C and D D, in combination with means,

substantially as described, for pressing the part C vertically, and thereby pressing the parts D D laterally, substantially as and for the purposes set forth.

In testimony whereof I, the said THOMAS G. MORSE, have hereunto set my hand.

THOMAS C. MORSE.

Witnesses:

.1110. K. HALLOOK, RoBT. H. PORTER. 

